If I put an electronic stopwatch on the edge of a spinning disc and spin it up to 10,000 RPM, will it experience measurable time dilation? Is there any way to actually prove that theory on earth without going up into space (because space isn't real)?
I think you're a bit too highbrow here, maybe you should ask PrepHole
how do you conclude time dilation is real but space isn't? let me guess you consulted Facebook's top minds.
I never said time dilation is real I just want a way to prove it.
So
>if you want to get a measurable result you need to be going at speeds that are literally impossible
in other words time dilation isn't real either. thanks for the answer guys, mods please close this thread
The best way to prove time dilation on earth is via detection of muons from cosmic rays.
When cosmic rays (which are particles, the convention is to call them rays regardless) collide with molecules in the atmosphere they both break apart into a variety of products, including muons.
Muons have such a short half-life that there is no way they would last long enough to reach the surface of the earth before decaying, even at the velocities of cosmic rays. The only explanation is that they are experiencing time dilation, effectively slowing their rate of decay relative to the timeframe of an observer on earth.
Instructions for building a cheap muon detector can be found here:
https://github.com/spenceraxani/CosmicWatch-Desktop-Muon-Detector-v2/blob/master/Instructions.pdf
everything experiences some degree of time dilation in response to gravity and velocity. 10,000 rpms is nowhere near enough to make a noticeable difference tho
As states, everything is constantly experiencing time dilation based on its current state. But the differences are so tiny to be effectively immaterial. To get 1% time dilation you'd need to be doing around 14% the speed of light. So around 42,000,000 kph relative to the observer.
>time dilation is real
>why
>it just is
>on earth
well, GPS is technically on earth. satellite clocks do make adjustments for minor time dilation in order to locate you accurately.
It is my opinion that GPS isn't real either. It's just powered by aliens with telescopes looking at you and sending you your current location. That's why it doesn't work if you go underground, because the aliens can't see underground with their telescopes.
And why would these aliens be providing those services?
the US gov probably pays them with aborted fetuses and cut off foreskins, but nobody knows for sure
they dont do time dilation. i read a gps paper by "the biggest authority" on gps.
it doesnt use any of ol alberts theories either. its just smoke and mirrors as usual.
gps clocks dont adjust for speed since they all travel at the same speed.
their difference in speed relative to you is of zero consequence as your phone doesn't have an atomic clock in it anyway
you can go look up the specs for gps sat clocks, they do not compensate for dilation due to speed.
The watch will also be accelerated (centripetal force). So you have to apply both the Special and the General Relativity Theory.
If you take a 1m radius disk and spin it at 10k rpm, it would take about 2.6 years before you get a 1ms time difference. Counterintuitively, at that point the rotating clock would be 1ms behind the stopped one (rather than being ahead), as the acceleration of the stopwatch contributes more to the time dilation than its velocity. That could be measurable if you had 2 stopwatches perfectly synchronized somehow. Note though that the outer edge of the disk would be spinning at near mach 3 though and experience an acceleration of over 100000g. A normal stopwatch would not survive this and neither would a lot materials, so you'd have to do some impressive material engineering to address these issues. You'd also require some kind of cooling system or having the disk in vacuum, delicate balancing and of the disk, etc.
It'd be easier to build if you went for a smaller disk like 0.5m, but then you'd be stuck waiting over 40 years for a 1ms time difference. But anyway, that's probably also the reason why nobody has tried to measured time dilation in this way.
Correction: this is partially incorrect, moving clocks are always behind (slower), so the effects add up. It would take 1.3 years for a 1m disk and 8.3 for a 0.5m disk. The conclusion remains the same.
what a good answer with such a terrible gif attached
Spin it to 80,000 rpm and it would no longer be influenced by the Sun's gravity.
https://en.m.wikipedia.org/wiki/Unruh_effect
>10,000rpm for time dilatation
Are you suggesting a weedwacker removes weeds by dilating the time around them to return them into a lesser grown state? Brother, I've ridden motorcycles that rev higher. fbpb, take this to PrepHole
your pistons time traveled for extra speed it skips a stroke on a 4 stroke
>measurable time dilation
NO
you can not measure time
you can only calculate time
(actually, time is not real)
will you observe an apparent change in the stopwatch? perhaps.
'time' is not dilating. what is changing is our perception of time, in this case as measured by the watch.
consider:
if you measured time using a sand timer / egg time, you could 'dilate time' by putting it in an elevator, as the elevator rose apparent gravity would increase, sand would fall out quicker, time would appear to have moved more quickly.
that is literally all 'time dilation' is
gib diameter of the disc
So what would be a good way measure time dilation?
Would sending a balloon up high enough with the watch cause dilation?
OP, even if you put an 8 year old girl on a spaceship and then fly very close to the speed of light, returning from your trip after 10 earth years have passed, but only minutes for you---- you'll still get arrested for pedophilia